Ruby-FFI is a ruby extension for programmatically loading dynamic
libraries, binding functions within them, and calling those functions
from Ruby code. Moreover, a Ruby-FFI extension works without changes on
Ruby and JRuby.

* It has a very intuitive DSL
* It supports all C native types
* It supports C structs (also nested), enums and global variables
* It supports callbacks
* It has smart methods to handle memory management of pointers and
  structs
